为文件夹中的一堆mp4视频生成缩略图

Question

I have read this but didnt help too much.

I have a folder called videos and another folder called thumbnails. I have many mp4 videos in video folder and want to catch thumbnails at 4th second to the thumbnails folder using ffmpeg and php.

1. I am using Wamp server 2.2 on windows whit php 5.3.8 and Apache 2.2.21
2. I downloaded ffmpeg from FFmpeg Windows Builds section of ffmpeg download page and the static 32 build from this link.

3. I extracted the 7z file to my website root
   here is my php code:

   $ffmpeg = "includes/ffmpeg/bin/ffmpeg";
   foreach(glob('files/videos/*.mp4') as $pathname){
     $filename = substr($pathname,13,strripos($pathname,'.mp4')-13);
     $thumbnail = 'files/thumbnails/'.$filename.'.jpg';
     exec("ffmpeg -i $pathname -an -y -f mjpeg -ss 00:00:04 -vframes 1 $thumbnail");
   }
   

but nothing happens and the thumbnails folder is always empty!
- How can I find out is ffmpeg installed on my server or not?
- How can I get my script to work?
Please help

Answer 1

try this:

$ffmpeg = "c:/wamp/www/includes/ffmpeg/bin/ffmpeg";
$videos = "c:/wamp/www/files/videos/*.mp4";
$ouput_path = "c:/wamp/www/files/thumbnails/";
foreach(glob($videos) as $v_file){
    $fname = basename($v_file, ".mp4");
    $thmb = $ouput_path.$fname.'_tn.jpg';
    $cmd = "$ffmpeg -i $v_file -an -y -f mjpeg -ss 00:00:04 -vframes 1 $thmb";
    $stat = system ($cmd);
}